sbobrowicz

@hirayaku,
It looks like you may have changed or adjusted the parameters of the memory controller.  For example, the Zybo runs with a 525MHz clock according to the board support files, not a 200MHz clock or a 533 MHz clock.  Can you please check your memory controller configuration against the one in the board support files here, to check that it matches?
Thanks,
Dan

Hey Mike,
 
I've seen you around ZedBoard.org forums, glad you managed to track us down (we are still a little under the radar here). Awesome blog by the way, I'm a big fan. You've got quite the catalog of cool projects. If you ever hit a snag on one of them, just post it here and we'll see what we can do to help. It's also a great place to show off the finished ones if you feel like linking to them.
 
Welcome!